In the drawing method, a ribbon of glass is drawn vertically from the glass furnace up an annealing tower by powered asbestos rollers which grip the ribbon as soon as it has cooled enough, a few feet above the furnace. This process is used primarily for window glass.

SOURCE
The Illustrated Science and Invention Encyclopedia New York: H.S. Stuttman Co., Inc., 1977

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This page was last updated on June 17, 2018.